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DK712 - 12 channels with self-correction function capacitive touch sensors

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Part number DK712
Manufacturer DongKe Semicondutor
File Size 310.21 KB
Description 12 channels with self-correction function capacitive touch sensors
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DK712 12 July 2011 DK712 12 http://www.dkpower.cn DK712 Spec V1.0 1 DK712 12 DK712 。 。。DK712 。 ● 12 ● “” ● ● PCB ● BCD ● I2C ● : 2.5v~6.5v ● ● ● ● ● ● ● http://www.dkpower.cn DK712 Spec V1.0 2 DK712 12 I2C I2C SDA SCL ,。 , DK712 ( slaver ) , MCU ( master )。 SCL , MCU ; SDA ,,( master )( slaver ) SDA , open-drain (,), “0” NMOS SDA ,“ 1” SDA 。 SCL 、 ACK , SCL 。 ( start ): SCL , SDA ,。 ( end ): SCL , SDA ,。 ( ACK ): DK712 ,,, 。 DK712 I2C ,。 : 1 ) MCU start ,MCU 8bit ,7bit A[6:0] R/WB()。 DK712 3 : (A[6:0]) (A[6:0]+RWB) ASEL 44H 89H ASEL 40H 81H ASEL 42H 85H 2 ) DK712 ,ACK。 MCU ACK ,。 3 ) DK712 12-bit K[11:0] 4-bit , ,。K[11:0] CIN11..CIN0。 4 ) MCU NACK ,。 5 ) SDA : SCL ,SDA 。 6 ) SCL :SCL H L 1.
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